The primary air filter is the first line of defense in air purification systems, specifically designed to capture larger airborne particles such as dust, pollen, fibers, and insects. This product is made from high-quality synthetic fiber filter media, featuring low resistance and high dust-holding capacity. It effectively protects medium- and high-efficiency filters, extending their service life. Widely used in HVAC systems, ventilation equipment, cleanrooms, and other applications requiring primary filtration.

Product Specifications

Product Features

High-Efficiency Filtration

• Gradual density structure design for layered filtration of different particle sizes

• Captures ≥5μm particles with over 90% efficiency

Cost-Effective & Durable

• Large dust-holding capacity for extended service life

• Washable and reusable (certain models), reducing operational costs

• Protects downstream high-efficiency filters, lowering system maintenance expenses

Safe & Eco-Friendly

• Complies with national air filter safety standards

• Free of harmful substances, safe for use

• Some models are recyclable, minimizing environmental impact

Easy Installation

• Multiple frame materials and thicknesses available

• Standard sizes compatible with most air handling units

• Custom sizes available for special requirements

FAQ

Q1: How often should the primary air filter be replaced?

A: Typically every 3-6 months, depending on the operating environment and air pollution levels. Replace when resistance reaches twice the initial value.

Q2: Can this filter be washed and reused?

A: Paper-frame primary filters are not recommended for washing. Metal-frame and certain synthetic filters can be gently cleaned 1-2 times, but filtration efficiency may decrease after washing.

Q3: How do I know when to replace the filter?

A: 1) Visible darkening of the filter media; 2) Noticeable reduction in airflow; 3) Pressure gauge shows resistance has doubled the initial value.

Q4: What do different colors indicate about filtration efficiency?

A: Primary filters are usually marked in green or blue—darker colors generally indicate higher efficiency. Refer to the product's G-rating for exact specifications.

Q5: Can non-standard sizes be customized?

A: Yes, we support custom sizes with a minimum order quantity of 50 units and a lead time of 7-15 working days.

Q6: What should I consider during installation?

A: 1) Follow the airflow direction arrow; 2) Ensure a tight seal around the frame; 3) Regularly check for loose fasteners; 4) Clean the installation slot before fitting.

• Establishment & Vision: Guangzhou Cleanroom Construction Co., Ltd. was founded in 2010 and is committed to becoming a one-stop cleanroom construction and solutions partner for customers, contributing to the development of the global cleanroom industry.
• ​Qualifications and Honors: It is a high-quality enterprise in China's cleanroom system engineering and equipment manufacturing industry, and has been recognized as a high-tech enterprise and a "little giant" of technological innovation in Guangzhou, demonstrating its leading position in the industry.
• Base Locations: The company has a rational layout, with its production base located in Panyu, Guangzhou, and its sales center in Pazhou, Guangzhou. The two locations operate in coordination, ensuring efficient production of products and quick response to market demands, providing convenient services to customers. We warmly welcome customers from home and abroad to visit us.
• Localized Services: In the process of global development, the company attaches great importance to localized services and has established stable partnerships in many countries such as Indonesia, Saudi Arabia, and the Philippines. This layout ensures that we can provide local customers with timely on-site responses, tailored solutions, and efficient after-sales services, allowing customers to experience seamless support.
• Certifications and Patents: The company has passed multiple international certifications such as ISO 9001, ISO 14001, and ISO 45001, and owns numerous utility model patents and design patents, reflecting its strict quality management and strong research and development capabilities. It is also a member of many professional associations such as the Guangdong Laboratory Association and the Shanghai Laboratory Equipment Association, and actively participates in well-known industry exhibitions such as the National Hospital Construction Conference and the Munich Shanghai Analysis & Biochemistry Exhibition, always keeping pace with the industry frontier.
• Product Applications: The company focuses on providing comprehensive solutions for laboratory and medical cleanroom construction. Its products include air showers, pass boxes, workbenches, dissection tables, fume hoods, etc., which are widely used in various fields such as animal experiments, biosafety, food safety, chemical industry, semiconductors, healthcare, and pharmaceuticals.
• Customer Cases: With high-quality products and services, it has won the trust of many well-known institutions such as Nanshan Pharmaceutical, Sun Yat-sen University, Tsinghua University, Hong Kong University of Science and Technology, Guangdong Medical Device Quality Supervision and Inspection Institute, and Shenzhen CDC.